child said:youd probably be better off not feeding them, or maybe in real tiny amounts and or use easily digestible foods such as wheat germ. they probably wont starve, theres always bacteria and other stuff on the bottom if they get hungry.
I would go by water temp (50f). Air temp can vary drastically from day to day (even hr to hr) while water temp remains more stable. No feeding for anybody once it hits 50f-they all go into hibernation state